CN211228466U

CN211228466U - Reducing concrete pile

Info

Publication number: CN211228466U
Application number: CN201921638948.4U
Authority: CN
Inventors: 赵海波; 王军; 陈秀梅; 张涛; 彭国君
Original assignee: Jiangsu Jingxiangyu Construction Co ltd
Current assignee: Jiangsu Jingxiangyu Construction Co ltd
Priority date: 2019-09-28
Filing date: 2019-09-28
Publication date: 2020-08-11
Anticipated expiration: 2029-09-28

Abstract

The utility model relates to a reducing concrete pile, be in a plurality of including a plurality of coaxial consecutive middle section piles and coaxial setting the stake point of pile body bottom, the equal hollow setting of middle section pile is a plurality of the middle section pile is followed its radial cross-section by keeping away from stake point one end to being close stake point one end crescent, the pile body is in being close the one end of stake point is provided with down the pile board, the pile body is in keeping away from the one end of stake point is provided with the pile board, go up the pile board with pile board fixed connection down, the utility model discloses the effect of the pile pressing of being convenient for has.

Description

Reducing concrete pile

Technical Field

The utility model belongs to the technical field of the technique of concrete pile and specifically relates to a reducing concrete pile.

Background

The concrete pile is a pile made of concrete (including common reinforced concrete and prestressed concrete), has the advantages of wood and steel saving, durability, low manufacturing cost and the like, is widely used in foundation engineering of hydraulic buildings, industrial buildings, civil buildings and bridges, and is also commonly used for anti-skidding or water-resisting of side slope and foundation pit support; the pile is long, the upper end is provided with a pile cap, the lower end is provided with a pile tip, and a holding type static pile press is usually adopted to press the pile body into the ground through the friction force between the peripheral wall of the pile body and the pile press.

Chinese patent with grant publication number CN203080511U discloses a reducing concrete pipe pile, which comprises a pile body, end plates are respectively arranged at two ends of the pile body, wherein the diameter of one end plate is greater than that of the other end plate, and a transition slope is arranged between the pile body and the end plate with smaller diameter. When the technical scheme is used, the pile body is pressed into the ground by using the pile pressing machine, so that the structure of the technical scheme is simple, and the ductility transformation of the end plates improves the horizontal load resistance of the variable-diameter concrete pipe pile.

The above prior art solutions have the following drawbacks: when the holding type static pile press machine presses the pile, the outer wall of the pile body and the press machine can not slip due to the fact that very large pressure is needed between the outer wall of the pile body and the protection press machine, and therefore pile pressing is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a reducing concrete pile convenient to pile pressing.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a reducing concrete pile, is in a plurality of including a plurality of coaxial consecutive middle section piles and coaxial setting the stake point of middle section pile bottom, the middle section pile is all hollow to be set up, and is a plurality of the middle section pile is followed its radial cross-section by keeping away from stake point one end to being close stake point one end crescent, the pile is in being close the one end of stake point is provided with down the pile sheet, the pile is in keeping away from the one end of stake point is provided with the pile sheet, the pile point is close middle section pile one end and is provided with the pile sheet, and is adjacent the last pile sheet and the lower pile sheet fixed connection of middle section pile.

By adopting the technical scheme, when the variable diameter concrete pile is used for pressing the pile, the pile tip is fixedly connected with any middle pile body through the upper pile plate and the lower pile body, then the pile pressing machine is used for pressing the variable diameter concrete pile, when the holding type static press-fitting machine is used, because the radial section of the middle pile body is gradually increased from one end far away from the pile tip to one end close to the pile tip, the outer wall of the middle pile body is in the inverted cone shape, the holding type static press-fitting machine can directly apply a part of force along the axial direction of the middle pile body to the inverted cone-shaped outer wall of the middle pile body, the holding type static press-fitting machine does not only rely on the friction force between the pile body and the middle pile body when pressing the pile, but can directly apply a part of force along the axial direction of the middle pile body to the inverted cone-shaped outer wall of the middle pile body, thereby reducing the pressure between the holding type static press-fitting machine and the middle pile body and making the pile pressing easier, after one middle-section pile body is pressed into the ground, the other middle-section pile body is fixedly connected through an upper pile plate and a lower pile plate, and then the variable-diameter concrete pile is continuously pressed into the ground; and because the middle section pile body is gradually increased from one end far away from the pile tip to one end close to the pile tip along the radial section of the middle section pile body, the pile body with the same cross section can bear larger longitudinal load and has good stability, so that the variable-diameter concrete pile is convenient to press in and can bear larger longitudinal load.

The utility model discloses further set up to: the upper pile plate is provided with a centering groove at one side far away from the pile tip, and the lower pile plate is provided with a centering lug corresponding to the centering groove at one side close to the pile tip.

Through adopting above-mentioned technical scheme, when adjacent middle section pile body carries out fixed connection through last pile body and lower pile body, through the cooperation of centering recess and centering lug messenger adjacent middle section pile body coaxial fixed connection, guarantee the pile pressing quality of this reducing concrete pile like this.

The utility model discloses further set up to: the height of the centering convex block is 1-2mm greater than the depth of the centering groove, chamfers are arranged on the edge of one side, far away from the pile tip, of the upper pile plate and the edge of one side, close to the pile tip, of the lower pile plate, and the upper pile plate is connected with the lower pile plate in a welded mode.

By adopting the technical scheme, when the centering convex block is placed in the centering groove, the height of the centering convex block is larger than the depth of the centering groove by 1-2mm, so that a 1-2mm interval is reserved between the upper pile plate and the lower pile plate, a welding seam formed when the upper pile plate and the lower pile plate are welded is positioned in a chamfer, and the interval between the upper pile plate and the lower pile plate is favorable for the penetration of the welding seam, so that the welding between the upper pile plate and the lower pile plate is firmer.

The utility model discloses further set up to: the pile body of the middle section is internally provided with a plurality of reinforcing ribs along the axial direction of the pile body of the middle section, the pile body of the middle section is internally provided with a plurality of reinforcing frames along the axial direction of the pile body of the middle section, and the reinforcing ribs are fixedly connected with the reinforcing frames.

Through adopting above-mentioned technical scheme, set up a plurality of strengthening ribs along the axial of middle section pile body and strengthened this reducing concrete pile along its axial bearing capacity, this reducing concrete pile has been strengthened along its axial bearing capacity to a plurality of reinforcement frames for the reducing concrete pile can bear bigger load.

The utility model discloses further set up to: and two ends of the reinforcing rib are respectively and fixedly connected with the upper pile plate and the lower pile plate.

Through adopting above-mentioned technical scheme, with last pile sheet and lower pile sheet difference fixed connection at the both ends of strengthening rib, realized going up the fixed connection between pile sheet and lower pile sheet and the middle section pile body like this, need not to set up connecting device between last pile sheet and middle section pile body and lower pile sheet and the middle section pile body, saved the cost.

The utility model discloses further set up to: the upper pile plate farthest away from the pile tip is fixedly connected with a pile cap, one side, close to the pile tip, of the pile cap corresponds to the centering groove and is provided with a centering lug, and the edge, close to the pile tip, of one side of the pile cap is provided with a chamfer.

Through adopting above-mentioned technical scheme, the one end that the stake point was kept away from to the middle section pile body of keeping away from the stake point most through the pile cap is sealed, live whole reducing concrete pile, and is close stake point one side at the pile cap and set up centering lug equally and set up the chamfer on its border for the pile cap can weld with the last pile sheet of arbitrary middle section pile body, has improved this reducing concrete pile's suitability.

The utility model discloses further set up to: the outside parcel of stake point has the steel protective housing, steel protective housing inboard is provided with a plurality of dead levers, the dead lever is in the stake point.

Through adopting above-mentioned technical scheme, the stake point is because the reason self structural strength of its shape is little, and at the pile pressing in-process, by the stake point as the most advanced to soil extrusion, the stake point need bear great power, consequently wraps up the steel protective housing in the outside of stake point to carry out fixed connection to steel protective housing and stake point in the stake point through pouring the dead lever.

The utility model discloses further set up to: the center of going up the pile plate sets up the screw hole for giving first place to, screw hole female connection has rings.

Through adopting above-mentioned technical scheme, the middle section pile body all need with the vertical hoist and mount of middle section pile body when installing on embracing formula static pile press and welding between the adjacent middle section pile body, the accessible sets up the rings of department of putting at last pile sheet central point and lifts by crane the middle section pile body is vertical, hoist and mount or weld accomplish after pull down rings can, make things convenient for the installation of middle section pile body and the welding between the adjacent middle section pile body like this.

To sum up, the utility model discloses a beneficial technological effect does:

1. the cross section of the middle section pile body along the radial direction is gradually increased from one end far away from the pile tip to one end close to the pile tip, so that the variable-diameter concrete pile is convenient to press in and can bear larger longitudinal load;

2. the height of the centering convex block is 1-2mm greater than the depth of the centering groove, so that the upper pile plate and the lower pile plate are melted through during welding, and the upper pile plate and the lower pile plate are welded more firmly.

Drawings

Fig. 1 is a schematic view of the present invention in a half-section along the axial direction thereof.

In the figure, 1, a middle pile body; 11. pile plate loading; 111. centering the groove; 112. a threaded hole; 114. pile caps; 12. pile plate setting; 121. centering the bump; 13. reinforcing ribs; 14. a reinforcement ring; 2. pile tip; 21. a steel protective shell; 211. fixing the rod; 3. and (6) chamfering.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, in order to the utility model discloses a variable diameter concrete pile, which comprises a plurality of coaxially and sequentially connected middle-section pile bodies 1 and pile tips 2 coaxially arranged at the bottom ends of the plurality of middle-section pile bodies 1, wherein the middle-section pile bodies 1 are arranged in a hollow manner, and the section of the middle-section pile bodies 1 along the radial direction thereof is gradually increased from one end far away from the pile tips 2 to one end close to the pile tips 2; in this embodiment, the middle-section pile body 1 is a square pile, the pile tip 2 is a cone, the middle-section pile body 1 and the pile tip 2 are both made of concrete, and the concrete strength grade is determined according to the construction conditions.

Referring to fig. 1, an upper pile plate 11 is arranged at one end of the middle-section pile body 1 far away from the pile tip 2, a lower pile plate 12 is arranged at one end of the middle-section pile body near the pile tip 2, and the upper pile plate 11 and the lower pile plate 12 of the adjacent middle-section pile body 1 are fixedly connected; the upper pile plate 11 is provided with a centering groove 111 at one side far away from the pile tip 2; the lower pile plate 12 is provided with a centering projection 121 corresponding to the centering groove 111 at one side close to the pile tip 2; a threaded hole 112 is formed in the center of the upper pile plate 11 and is in threaded connection with a lifting ring; in this embodiment, the upper pile plate 11 and the lower pile plate 12 are both square, the centering groove 111 is disposed at the center of the upper pile plate 11, the corresponding centering protrusion 121 is disposed at the center of the lower pile plate 12, and the threaded hole 112 is disposed on the bottom wall of the centering groove 111.

Referring to fig. 1, the height of the centering protrusion 121 is 1-2mm greater than the depth of the centering groove 111, chamfers 3 are arranged on both the edge of the upper pile plate 11 on the side far from the pile tip 2 and the edge of the lower pile plate 12 on the side close to the pile tip 2, and the upper pile plate 11 and the lower pile plate 12 of the adjacent middle-section pile body 1 are welded; in this embodiment, argon arc welding is adopted for welding, so that welding materials obtained by dissolving the welding rod are accumulated in the chamfer 3, and a weld joint is cleaned after welding.

Referring to fig. 1, a plurality of reinforcing ribs 13 are arranged in the middle-section pile body 1 along the axial direction thereof, a plurality of reinforcing frames are horizontally arranged in the middle-section pile body 1 along the axial direction thereof, and the plurality of reinforcing ribs 13 are fixedly connected with the plurality of reinforcing frames; two ends of the reinforcing rib 13 are respectively fixedly connected with the upper pile plate 11 and the lower pile plate 12; the outer side of the pile point 2 is wrapped with a steel protective shell 21, a plurality of fixing rods 211 are arranged on the inner side of the steel protective shell 21, and the fixing rods 211 are located in the pile point 2; in this embodiment, four fixing rods 211 are provided corresponding to four walls of the conical steel protective shell 21, and the four fixing rods 211 are fixedly connected to each other near one end of the middle-section pile body 1.

Referring to fig. 1, a pile cap 114 is fixedly connected to the upper pile plate 11 farthest from the pile tip 2, a centering protrusion 121 is disposed on one side of the pile cap 114 close to the pile tip 2 corresponding to the centering groove 111, and a chamfer 3 is disposed on one side edge of the pile cap 114 close to the pile tip 2; in this embodiment, the pile cap 114 and the upper pile plate 11 are also fixedly connected by welding.

The implementation principle of the embodiment is as follows: when the variable diameter concrete pile is pressed, firstly welding the pile tip 2 with any middle section pile body 1, then installing a hanging ring on the upper pile plate 11 of the middle section pile body 1 through a threaded hole 112 to vertically hang up the middle section pile body 1 and the pile tip 2 and installing the middle section pile body 1 and the pile tip 2 on a holding type static pile press, in the pile pressing process, the pile tip 2 extrudes soil when the holding type static pile press extrudes the soil through friction force between the holding type static pile press and the middle section pile body 1 and part of the force towards the ground along the axis of the middle section pile body 1, the middle section pile body 1 and the pile tip 2 are pressed into the ground, the steel protective shell 21 enhances the strength of the pile tip 2, one part of the end of the middle section pile body 1 far away from the pile tip 2 needs to be kept above the ground after the pile pressing is finished, vertically hanging up the other middle section pile body 1 through the upper pile plate 11 and the lower pile plate 12 to be welded together, in the process, the centering groove 111 and the middle section projection 121 can ensure the coaxial butt joint of the adjacent middle section pile, then, a holding type static pile press is continuously used for pressing the variable-diameter concrete pile, the size difference of the end faces of the two ends of the middle-section pile body 1 is not large, the soil can be tightly propped against the outer wall of the middle-section pile body 1 again under the elasticity of the soil, and after the pile pressing of the last middle-section pile body 1 is finished, the pile cap 114 is welded with the upper pile plate 11 of the middle-section pile body 1; when the upper pile plate 11 and the lower pile plate 12 are welded, welding rods are positioned in a V-shaped groove formed by the chamfer 3 of the upper pile plate 11 and the chamfer 3 of the lower pile plate 12, molten welding materials automatically flow into a gap of 1-2mm between the upper pile plate 11 and the lower pile plate 12, and the V-shaped groove is filled with the welding materials after the welding is finished; the strengthening rib 13 has strengthened the intensity of this reducing concrete with the rib, and 13 strengthening ribs and rib are before this middle section pile body 1 pours, in advance with strengthening rib 13, rib, last pile sheet 11 and pile sheet 12 welding down together, then put into the mould again in to the mould water can, like the same, make when pile point 2 pours dead lever 211 be in the mould pour can.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a reducing concrete pile, includes that a plurality of coaxial consecutive middle section pile body (1) and coaxial setting are in a plurality of the stake point (2) of middle section pile body (1) bottom, the equal hollow setting of middle section pile body (1), its characterized in that: a plurality of middle section pile body (1) is followed its radial cross-section by keeping away from stake point (2) one end to being close stake point (2) one end and crescent, the pile body is in being close the one end of stake point (2) is provided with down pile sheet (12), the pile body is in keeping away from the one end of stake point (2) is provided with pile sheet (11), stake point (2) are close middle section pile body (1) one end and are provided with pile sheet (11), and are adjacent last pile sheet (11) and lower pile sheet (12) fixed connection of middle section pile body (1).

2. The variable diameter concrete pile according to claim 1, wherein: go up pilework (11) and be in keeping away from stake point (2) one side is provided with centering recess (111), lower pilework (12) is in being close stake point (2) one side corresponds centering recess (111) and is provided with centering lug (121).

3. The variable diameter concrete pile according to claim 2, wherein: the height of centering lug (121) is greater than the degree of depth 1-2mm of centering recess (111), go up piler plate (11) and keep away from the border of stake point (2) one side with lower piler plate (12) are close the border of stake point (2) one side all is provided with chamfer (3), go up piler plate (11) with lower piler plate (12) welded connection.

4. The variable diameter concrete pile according to claim 1, wherein: be provided with a plurality of strengthening ribs (13) along its axial in the middle section pile body (1), be provided with a plurality of reinforcement frames, a plurality of along its axial level in the middle section pile body (1) strengthening rib (13) and a plurality of strengthen frame fixed connection.

5. The variable diameter concrete pile according to claim 4, wherein: and two ends of the reinforcing rib (13) are respectively fixedly connected with the upper pile plate (11) and the lower pile plate (12).

6. The variable diameter concrete pile according to claim 2, wherein: apart from fixedly connected with pile cap (114) on last pile sheet (11) that pile point (2) are farthest, pile cap (114) are close pile point (2) one side corresponds centering recess (111) are provided with centering lug (121), pile cap (114) are close pile point (2) one side border is provided with chamfer (3).

7. The variable diameter concrete pile according to claim 1, wherein: pile point (2) outside parcel has steel protective housing (21), steel protective housing (21) inboard is provided with a plurality of dead levers (211), dead lever (211) are in pile point (2).

8. The variable diameter concrete pile according to claim 1, wherein: the center of the upper pile plate (11) is mainly provided with a threaded hole (112), and a lifting ring is connected to the threaded hole (112) in an internal thread mode.